Controls and orientation
Use the player's touch controls with adequate tap targets. Landscape provides more space, but automatic rotation depends on the system orientation lock. Fullscreen only starts through a control available to the browser.
Data and quality
Higher quality consumes more mobile data and device resources. Select automatic or a lower variant before long viewing on mobile data. The portal cannot know the exact carrier charge.
Platform limits
Autoplay with sound, background playback, picture-in-picture and wake lock are controlled by the system and browser. Subtitles and translation variants only exist when included with the selected source. Do not install unknown codecs or applications.
For a persistent issue, compare Wi-Fi and ordinary network only as a diagnostic step, test another episode and supported browser, then create a mobile technical ticket.